21518687820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1652741}}^1$

素因数の和:1652791

約数の個数: 96

約数和(自身を含む): 71081127936

約数和(自身を除く): 49562440116

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 60, 62, 70, 84, 93, 105, 124, 140, 155, 186, 210, 217, 310, 372, 420, 434, 465, 620, 651, 868, 930, 1085, 1302, 1860, 2170, 2604, 3255, 4340, 6510, 13020, 1652741, 3305482, 4958223, 6610964, 8263705, 9916446, 11569187, 16527410, 19832892, 23138374, 24791115, 33054820, 34707561, 46276748, 49582230, 51234971, 57845935, 69415122, 99164460, 102469942, 115691870, 138830244, 153704913, 173537805, 204939884, 231383740, 256174855, 307409826, 347075610, 358644797, 512349710, 614819652, 694151220, 717289594, 768524565, 1024699420, 1075934391, 1434579188, 1537049130, 1793223985, 2151868782, 3074098260, 3586447970, 4303737564, 5379671955, 7172895940, 10759343910, 21518687820]

約数ペア:

[(1, 21518687820), (2, 10759343910), (3, 7172895940), (4, 5379671955), (5, 4303737564), (6, 3586447970), (7, 3074098260), (10, 2151868782), (12, 1793223985), (14, 1537049130), (15, 1434579188), (20, 1075934391), (21, 1024699420), (28, 768524565), (30, 717289594), (31, 694151220), (35, 614819652), (42, 512349710), (60, 358644797), (62, 347075610), (70, 307409826), (84, 256174855), (93, 231383740), (105, 204939884), (124, 173537805), (140, 153704913), (155, 138830244), (186, 115691870), (210, 102469942), (217, 99164460), (310, 69415122), (372, 57845935), (420, 51234971), (434, 49582230), (465, 46276748), (620, 34707561), (651, 33054820), (868, 24791115), (930, 23138374), (1085, 19832892), (1302, 16527410), (1860, 11569187), (2170, 9916446), (2604, 8263705), (3255, 6610964), (4340, 4958223), (6510, 3305482), (13020, 1652741)]